5788 Alum, Calcite, Ash Canyon, Truth or Consequences, Sierra Co., New Mexico, USA July 18, 2022 Steve New Mexico North and Central Americas United States Fibrous white alum with calcite (it dissolves leaving alum). Visual ID by Rolf Leutcke photo in Mindat. Collected by Mike Reinke. Width of view 6.5mm. Stack of 20 images. Click on the image below for a higher resolution version.
Australasia Australia Victoria ncat JP407 Gonnardite/Natrolite, Phillipsite-Na, Analcime, Calcite, Old Melbourne Quarries, Victoria September 23, 2019
Oceana Papua New Guinea 6090 Gypsum, Calcite, Porgera Mine, Mt Kare Valley, Mt Hagen, Enga Province, Papua New Guinea October 2, 2019
Australasia Australia New South Wales 3933 Calcite after Ikaite (Glendonite), New South Wales October 3, 2019
Canada North and Central Americas 30088 Pyrite, Marcasite, Calcite, Nanisivik Mine, Nanisivik, Baffin Island, Canada April 28, 2020